The effect of fission-energy Xe ion irradiation on the structural integrity and dissolution of the CeO2 matrix

Popel, A. J. and Le Solliec, S. and Lampronti, G. I. and Day, J. and Petrov, P. K. and Farnan, I. (2017) The effect of fission-energy Xe ion irradiation on the structural integrity and dissolution of the CeO2 matrix. Journal of Nuclear Materials, 484. pp. 332-338. ISSN 00223115 DOI 10.1016/j.jnucmat.2016.10.046

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Official URL: http://doi.org/10.1016/j.jnucmat.2016.10.046

Abstract

This work considers the effect of fission fragment damage on the structural integrity and dissolution of the CeO2 matrix in water, as a simulant for the UO2 matrix of spent nuclear fuel. For this purpose, thin films of CeO2 on Si substrates were produced and irradiated by 92 MeV 129Xe23+ ions to a fluence of 4.8 × 1015 ions/cm2 to simulate fission damage that occurs within nuclear fuels along with bulk CeO2 samples. The irradiated and unirradiated samples were characterised and a static batch dissolution experiment was conducted to study the effect of the induced irradiation damage on dissolution of the CeO2 matrix. Complex restructuring took place in the irradiated films and the irradiated samples showed an increase in the amount of dissolved cerium, as compared to the corresponding unirradiated samples. Secondary phases were also observed on the surface of the irradiated CeO2 films after the dissolution experiment.

Item Type: Article
Uncontrolled Keywords: 2016AREP; IA72;
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
07 - Gold Open Access
Journal or Publication Title: Journal of Nuclear Materials
Volume: 484
Page Range: pp. 332-338
Identification Number: 10.1016/j.jnucmat.2016.10.046
Depositing User: Sarah Humbert
Date Deposited: 17 Feb 2017 18:29
Last Modified: 20 Feb 2017 11:28
URI: http://eprints.esc.cam.ac.uk/id/eprint/3827

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